The superficial and deep laminae of membrana tectoria are attached to the posterior surface of the vertebral body of C2 (axis), extending to the upper surface of the basilar occipital bone.  The superficial lamina attaches above the foramen magnum and blends with cranial dura mater.  The deep lamina attaches to the anterior margin of the foramen magnum as far laterally as the hypoglossal canals.  Two lateral bands of the deep lamina blend with the atlanto-occipital joint capsules.  It is continuous with the posterior longitudinal ligament.